find the value of x for which A is an identity matrix, A= cosx -sinx sinx cosx ( in sq. brackets) Share with your friends Share 1 Rishabh Mittal answered this A=cos x- sin xsin xcos xComparing it with identity matrix I=1001 so , cos x =1 and sin x =0so , x= 2nπ , where n=0,1,2 ..... 0 View Full Answer
